Indented brick and pavement composed of such bricks



p 1969 A. J. VAN DER MEIJDEN ENT COMPOSED OF SUCH BRICKS INDENTED BRICK AND PAVEM Filed Dec. 18, 1967 INVENTOR:

flunmu: I my one nr/Joaw United States Patent Ofiice 3,464,328 Patented Sept. 2, 1969 3,464,328 INDENTEI) BRICK AND PAVEMENT COMPOSED OF SUCH BRICKS Antonius Johannes van der Meijden, Boslaan 63, Son, Netherlands Filed Dec. 18, 1967, Ser. No. 691,495 Claims priority, application Netherlands, Dec. 23, 1966, 6618091 Int. Cl. Etllc /04 US. Cl. 94-13 6 Claims ABSTRACT OF THE DISCLOSURE Generally rectangular brick has teeth formed in its side and end walls, teeth in each wall being offset from teeth in opposite wall. Ribs arranged at corners of brick, each tooth extending outwardly of ribs and each recess extending inwardly thereof. Side walls each provided with fiat portion having a width about twice that of one side of a rib. Brick is beveled between its top face and each wall. In pavement, teeth of adjacent bricks mesh, and ribs of two adjacent bricks seat against flat portion of third Overlapping brick.

The invention relates to an indented brick and in particular a paving brick having parallel riblike teeth extending along each of the upstanding side wall of the brick from one main surface thereof to the other one, each indentation between the teeth on one side wall being opposed by a tooth on the opposite side wall.

The invention relates also to road pavements composed of such bricks.

It is an object of the invention to maintain the advantages of such indented bricks as can be joined in mutual meshing engagement in different kinds of bonds in the street pavement but to form the brick in such a way that further advantages can be obtained particularly in the prevention of crumbling off at the corners during transport and where they meet each other in the pavement.

The foregoing and other objects and advantages of the invention will appear in the description to follow. In the description reference is made to the accompanying drawings, which form a part hereof, and in which there is shown by way of illustration and not of limitation specific forms in which the invention may be embodied.

In the drawings:

FIG. 1 is a plan view of a part of a road surface in which three bricks are placed in mutual engagement in a so called elbow bond, which arrangement can cover the entire road surface, and

FIG. 2 is a side elevation of one of the longitudinal side faces of an indented brick according to the invention.

Identical bricks 1, 2, 3 are used in the road surface.

Groups of indentations are indicated by 4 and 5 along one longitudinal upstanding side wall 6 of the brick 3 and by 9 along a head side wall. The teeth between the indentations extend like parallel ribs between the two main surfaces 7 and 8 of the brick. To each indentation on one side of the brick corresponds an opposing tooth on the opposite brick side.

The edges of each upper tooth end run into a bevelled edge 15 around the circumference of the upper main brick surface 7.

Each corner rib where two upstanding sides of a brick meet each other has its sides such as indicated at 12 and 13 each running parallel to one of the cross sectional middle planes of the brick 3 and these sides are at a level halfway the height d of the teeth.

Both corner rib sides 12 and 13 have the same width. Thus the brick corners per se have in fact the same shape as those of an ordinary brick with flat side walls, but in our case they lie countersunk with respect to the teeth tops on the brick sides. Therefore those corners of which three meet each other repeatedly in the pavement, are at least as well safeguarded against crumbling also on transport as are the corners of ordinary bricks. Moreover, as is shown in FIG. 1, two corner rib sides will in a preferred embodiment of the invention always be placed in a direct even line along one fiat side face 14 at the middle of the longitudinal side of an adjoining brick in the pavement bond. For this purpose flat faces 14 are provided at opposite longitudinal sides of the brick and parallel to the longitudinal axis thereof, the width of each face 14 being about twice the width of a corner rib side 12 or 13.

The width b of the joint which is normally left between two adjoining bricks in the pavement may be e.g. 2 mm., but the upper part of the joint is widened because of the bevelled edge 15. The distance a between the border lines 10 and 11 of the surfaces 7 in the plane of the pavement may therefore be 16 mm. These widened joint parts will be filled with sand or mud covering the tooth ends and the pavement will have a regular appearance with straight joints.

The distance 0 will be a little more than half the width of the joint at its upper part and dimension e between two faces 13 corresponds to a normal dimension for bricks, to eg. 104 mm., the brick length f being then e.g. 210 mm.

In the present case the width of the corner rib sides 12, 13 corresponds to half the teeth pitch.

While preferred embodiments of the invention have been shown and described, it is to be understood that changes and variations may be made without departing from the spirit and scope of the invention as defined in the appended claims.

What I claim is:

1. A generally rectangular brick having top and bottom faces and end and side walls, each of said walls being formed with a series of teeth extending between said faces and a recess between each two successive teeth, each recess in each side and end wall being opposite a tooth in the other side or end wall, respectively, said teeth and recesses being spaced from the corners of the brick to define end ribs where each side and end wall meet, each tooth extending for about one-half its depth outwardly of said ribs in its respective Wall and each recess extending inwardly 'of said ribs in its respective wall, and a fiat portion formed in each side wall extending between said faces and having a width substantially twice the width of one of said corner ribs in the plane of its respective side wall, whereby a pair of corner ribs of two adjacent bricks may be seated against the flat portion of an overlapping third brick.

2. A brick as defined in claim 1 wherein the dimension of each of said fiat portions measured along the length of its respective side wall is about equal to the tooth pitch.

3. A brick as defined in claim 1 wherein the tooth height is about one centimeter.

4. A brick as defined in claim 1 including a bevel between said top face and each of said Walls.

5. A brick as defined in claim 4 wherein the width of each of said bevels exceeds the height of said teeth, whereby the entire end of each tooth terminates in said bevel so that the portion of said bevel adjacent to said top face is continuous.

6. A road pavement formed of bricks as defined in claim 5, said bricks being arranged with the teeth of each brick accommodated within the recesses of adjacent bricks and the ribs of each brick seated against the flat portions References Cited UNITED STATES PATENTS 1,096,267 5/1914 Sammis 94-13 FOREIGN PATENTS 557,828 5/1923 France.

JACOB L. NACKENOFF, Primary Examiner 

